Heater-tube support for electric lamps.



No. 652,705. Patented June 26, I900. A. J. WURTS, M. W. HANKS, F. M. GODDARD &. E. BENNETT. HEATER TUBE SUPPORT FOR ELECTRIC LAMPS.

(Application filed Dec. 7 1899.) I No Model.)

2 Sheets-Shem I.

WITNESSES: W hwslvro/is WM 9% n Zn-CM M711 No. 652,705. Patented June 26, 1900. A. J. wums, M. w. HANKS, F. M. GODDARD & E. BENNETT. HEATER TUBE SUPPORT FOR ELECTRIC LAMPS.

(Application filed Dec. 7, 1899.)

(No Model.) 2 Sheets-Sheet 2.

22 22 Iiglf 32 28 3- 2a WITNESSES: INVENTOHS MM 0 9 M W M M THE Nonms PETERS co. worau'mu, WASHINGTON, u. c.

1 UNITED STATES PATENT OFFICE.

AL XANDE J. wURTs, MARsH LLw. HANKS, AND FREDERICK M. GOD- DARD, or PITTSBURG, AND EDWARD BENNETT, JEANNETTE, PENN- sYLvANIA, ASSIGNORS TO GEOR PENNSYLVANIA. V

GE VESTINGHOUSE, OF PITTSBURG,

HEATER-TUBE SUPPORT FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 652,705, dated June 26, 1900.

lApplication filed December '7, 1899. Serial No. 739,557. (No model.)

To all whom it may concern:

Beit known that we,ALEXANDER J .WURTs, MARSHALL W. HANKs, and FREDERICK M. GODDARD, residingat Pittsburg, in the county of Allegheny, and EDWARD BENNETT,residing at Jeannette, in the county of Westmoreland, State of Pennsylvania, all citizens of the United States, have invented a new and useful Improvement in Heater-Tube Supports for Electric Lamps, (Case No. 854,) of which the following is a specification.

Our invention relates to electric lamps of the class in which the glowers are non-conducting when cold, but which become luminous conductors when their temperature is raised to a suitable point by means of externally generated and applied heat.

The object of our invention is to provide a non-conducting support for the glowers and heaters of lamps of the character indicated which shall be simple, compact, and inexpensive in construction and upon which the heaters and glowers may be independently and detachably mounted.

In the accompanying drawings, Figure 1 is aview, partially in front elevation and partially in section, of a lamp constructed in accordance with our invention. Fig. 2 is a side elevation ofthe lamp shown in Fig. 1, the globe being removed. Fig. 3 is a plan view, looking upward, of the operative portions of the lamp, and Fig. at is an elevation of the side opposite that shown in Fig. 2." Figs. 5 and 6 are views, partially in elevation and partially in section, taken at right angles to each other; and Fig. 7 is a plan view, looking upward, of a modification. Figs. 8 and 9 are views corresponding, respectively, to Figs. 5 and 6 and showing a further modification. Fig, 10 is a detail view of one of the heatertubes shown in Figs. 8 and 9. Figs ll and 12 are views corresponding, respectively, to Fig. 8 and 9, showing afu'ither modification. Fig. 13 is a View, partially in elevation and partially in section, of a further modification; and Fig. 14: is a detail View of the heater-tube shown in Fig. 13. Fig. 15 is a view, partially in front elevation and partially in section; and Fig. 16 is a side elevation of a further modification. Figs. 17 and 18 are views corresponding, respectively, to Figs. 11 and 12 and showing another modification. Fig. 19 is'a side elevation, and Fig. 20 a View, partially in front elevation and partially in sec tion, of a further modification. Figs. 21 and 22 are views corresponding, respectively, to Figs. 17'and 18 and showing another modification. Fig. 23 is a view, partially in front elevation and partially in section, of another modified form. Fig. 24 is a plan view of the supporting-plate.shown in Figs. 5 to 18, inclusive, and Figs. 21 and 22.

Referring now particularly to Figs. 1 to 4, inclusive,- the lamp 1 is supported upon a plate 2, having depending springs 3 for fastening the globe 4 in position. The glower terminal bars 5 are mounted in two asbestos blocks or plates 6 and provided with sockets at their upper ends, which receive the lower ends of the terminal rods 7, these rods being held in the sockets by means of set-screws 8.

on-conducting refractory material, are sup ported in the structure above described by .means of a bolt 13, thesep1ates'12 being readily removable when the bolt is'withdrawn. Each of the plates 12 is provided on its inner side near its lower end with a plurality of recesses 13*, corresponding in number and size to the tubular heaters 14, the ends of the heaters being located in these sockets. lvlountedin suitable recesses above the heaters is a plate 15, of porcelain or other suitable material, this plate being employed as a reflector of both light and heat and being provided with openings 15 for theheater terminal wires. The plates 12 are also provided with bottom and side grooves 16, corresponding in number to the glowers 17, the glower terminal wires 18 being located in the grooves 16 and connected at their upper ends to the terminal bars 5 by means of sockets and binding-screws.

It will be understood from the foregoing de- The heater terminal bars 9 are similarly .mounted on the asbestos plates Gan-d are also scription that the removal of a glower may be effected by merely loosening'the bindingscrews holding its terminal wires to the terminal bars 5, and that the removal of the heaters, or any of them, may be effected by withdrawing the bolt 13 and sliding the plates 12 downward out of the frame.

In the structures shown in Figs. 5,6, and 7 a circular plate 19, having a pair of lugs 20 projecting from one side and two pairs of perforated lugs 21 projecting from the opposite side, is provided. This plate 19 is constructed of porcelain or othersuitable non-conducting refractory material and the lugs 20 and 21 are preferably formed integral therewith. The lugs 21 constitute in part a means'for attaching the heater terminal rods 22- to the plate 19.

Each of these rods is cutaway at itslower end,

so as to fit between the corresponding pair, of lugs2-1,-and is perforated, so that a pin 23 may be inserted through the registering perforationsinthe lugs and'in the end oftheterminal rod. This is a desirable means for connecting' the heater terminal rods to the heater-sup 20 issubstantially'equal to the lengths of the tubular heaters 14,and-said logs are recessed or perforated to receive short tubes 24, that project intothe ends of the heater-tubes, the

latter beingfirst placed in position and the short tubes then inserted. The ends" of the lugs 20 are provided with grooves 25 to receive the terminal wires 18 of the glowers 17. i

The plate 19 is provided adjacent to the innor side of each lug 20 with a set of apertures 26, corresponding in number and posi tion to the heaters 14, and adjacent to the outer side of each lug the plate is provided with apertures 27' in the form of slots, the number and position of these slots corresponding to the glowers 17. The heater terminal wires 28 are threaded through the apertur'es 26 and fastened to the terminal rods 3 22b} means of suitable apertures and binding-screws, as indicated. The terminal wires 18 of the glowers are threadedthrough the slots 27 and attached to the proper terminal l bars or rods. (Not here shown.)

The construction shownin Figs. 8, 9, and 10 is the sameas that of Figs. 5, 6,-and 7, ex-

cept that the inner face of one of the lugs 20 is provided with a set of circular recesses 29 forthereception of the ends of the heatertubes 14, while the inner face of the other lug 20 is provided with elongated recesses 29, extending upward from its botto1n-,-into which projects a small lug 30. Each of the tubes 1st is provided with a notch- 31 in one end, so that it may be slipped into the recess 2-9 over the lug 30 and then partially rol tated to lock it in position.

In Figs. 11 and 12 the inner faces of the lugs 20 are provided with recesses of two forms, the set 29 conforming to the shape of the heater-tube and the set 29 being in the form of slots or grooves extending to the end of the lug. These two forms of recesses alternate with each other and are so arranged that a cylindrical recess in one lug is opposite the open-ended recess in the other. It follows, therefore, that when the set of heaters is in position and fastened together by means of their terminal wires attached to common terminal rods the heater as a whole ,will be securely supported in position and at thesame time be readily removable by releasing the terminal wires from their connections with the binding-posts.

In Figs. 13 and 14. each lug 20 is provided with recesses 29, extending outward to its lower end, and in each recess is a small laterally-p rojectinglug-30. Each end of the heatertube 14! is provided with a notch 31,- so that the-tube may be slid into the recess and then partially rotated, so that the tube will be supported upon the small lugs.

In Figs. 15 and 16 the heater-tubes 14 are P flattened at the ends, and the recesses 29 in the lugs 20 are contracted at their lower ends, so that although the flattened ends of the tubes may be inserted therein edgewisethey will be securely held in the recesses ifpar tially rotated after insertion. In Figs. 17 and 18 each of the lugs 20 is provided witha long groove or recess32, substantially parallel to ,3 the plate 19, and at its lower side are formed notches or recesses"32,-in which the-ends of the tubes 14: rest after being slid into the long T grooves or recesses 32-. V V

In the form shown in Figs. 1-9 and 20 the lugs 20 are approximately semicircular in form and the-surface grooves 25 and recesses 33 are correspondingly arranged. The re cesses 33 for the reception of the ends of the heater-tubes may have any of the forms al- Eready described; but, as indicated,the con fstruction, so'far as the supporting means for the tubes is concernedfls thatshown in Figs. 1, 5 and-I5. I v In Figs. 21 and 22 the lugs 20 are shown as j: provided with open-endedrecesses,the heater tubes l t being supported therein by theter- ,1 minal wires only. In Fig. 23 the tubes 14 rest loosely inreces'ses 34-, that extend completely through the @lugs 20. Other forms of supporting means for the heaters and glowers might be devised which would fall within our invention, and hence, although we haveillustrated and described a considerable number of modifications, we delsire it tobe understood that our invention isfnot limited to specific details ofconstruction any further than such details are specifically gsetforth in the claims.

Weclaim as our invention- I e 1-. Inanelec'tric lamp of the typedescrib'ed, an insulating heatensupport having a pair of laterally-projectinglugs provided with con=- fronting recesses, in combination with a'plu rality of tubular heaters, the ends of which are removably supported in said confronting recesses.

2. In an electric lamp of the class described, an insulating glower and heater support having a pair of laterally-projecting lugs provided with a plurality of confronting recesses and a plurality of grooves, in combination with tubular heaters the ends of which are removably located in said recesses and glowers the terminal wires of which rest in said grooves.

3. In an electric lamp of the class described, an insulating heater-support having a pair of laterally-projecting lugs each of which has a plurality of recesses adapted to receive the ends of tubular heaters.

4'. In an electric lamp of the class described, a non-conducting heater-support having recessed lugs on one side for the reception of heater-tube ends and having heater-terminalsupporting lugs on the other side.

5. In an electric lamp of the class described, a non-conducting heater-support having an integral pair of recessed lugs on one side and two pairs of integral, perforated lugs on the opposite side, substantially as and for the purpose set forth.

6. In an electric lamp of the class described, a non-conducting-plate having means at one side for removably supporting one or more glowers and one or more heaters, and having means at the opposite side for removably supporting heater-terminals.

7. In an electric lamp of the class described, a plate of porcelain or other suitable, nonconducting, refractory material having as integral parts thereof a pair of lugs projecting from one face and provided with confronting recesses, and two pairs of perforated lugs projecting from the opposite face, substantially as and for the purpose set forth.

8. In an electric lamp of the class described, a non-conducting plate having a pair of lugs projecting from one side and a set of apertures adjacent to each side of each lug, each lug having a set of recesses corresponding to one set of apertures and a set of grooves corresponding to the other adjacent set of apertures.

9. In an electriclamp of the class described,

a non-conducting plate having a pair of lugs projecting from one side and a set of apertures adjacent to each side of each lug, each lug having a set of recesses corresponding to one set of apertures and a set of grooves corresponding to the other adjacent set of apertures; in combination with a set of tubular heaters supported in said recesses and a set of glowers the terminal wires of which are located in said grooves.

10. In an electric lamp of the class described, a non-conducting plate having a pair of lugs projecting from one side, and having a set of perforations and a set of slots adjacent to the respective sides of each lug, said lugs being respectively provided with recesses corresponding in number and position to the perforations and with grooves corresponding in number and position to the slots.

11. In an electric lamp of the class described, a non-conducting plate having a pair of lugs projecting from one side, and having a set of perforations and a set of slots adja cent to the respective sides of each lug, said lugs being respectively provided with recesses corresponding in number and position to the perforations and with grooves corresponding in number and position to the slots; in combination with a set of tubular heaters supported in said recesses and a set of glowers the terminal wires of which arelocated in said grooves.

12. In an electric lamp of the class described, a non-conducting plate provided at one side with supporting means for one or more glowers and one or more heaters and at its opposite side with two pairs of perforated lugs, in combination with a pair of heater terminal rods each having its lower end perforated and formed to fit between one pair of said lugs.

In testimony whereof we have hereunto subscribed our names this 5th day of December,

ALEXANDER J. WURTS. MARSHALL W. HANKS. FREDERICK M. GODDARD. EDWARD BENNETT. Witnesses:

H. A. CROOKS, WESLEY G. CARR. 

